a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom
UK的用法和样例：
例句
UK nationals get the vote at 18. 英国国民18岁始有选举权。
The UK metricated its currency in 1971. 英国於1971年将货币改为十进制。
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